Revert 234195 "Under he --new-profile-management flag, migrate t..."

Added 7MB to the size of Chromium.app on Mac:
https://chromeperf.appspot.com/report?masters=Chromium&bots=chromium-rel-mac&tests=sizes%2FChromium.app&rev=234195&checked=core

(Linux seems to be fine.)

> Under he --new-profile-management flag, migrate the desktop profile avatars (hamburger, ninja) to the CrOS ones (penguin, dog, blurry circles).
> 
> Regarding the avatar resource files: I will have a followup CL to move the
> resource files to /common, once this lands. For now we'd like to monitor
> how including these files affects the size of the binary, and if it
> increases too much, have an easier revert.
> 
> BUG=312352
> 
> Review URL: https://codereview.chromium.org/60263002

TBR=noms@chromium.org

Review URL: https://codereview.chromium.org/66783004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@234202 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 234202